LTFT readings

[Freimuth]

Can anyone give me some good ranges my LTFT reading should be at?

I'm stock except having a short ram with a open cone filter. Running 93 oct gas.

213k miles

Have a bit of a stumble just cruising around you can't really see it in the RPM gauge but you can feel the car surging? When it happens.
Random CEL for a evap but I have a gas leak when I fill up so I know that issue.

I have replaced the vacuum lines and T.

MY LTFT was around -14 around 2k RPM 45mph
I have hit -22 LTFT under boost. I never go into the + side of the LTFT readings.

I'm new at this so if you need more info let me know.

 

[Bedwards]

Ideally you want LTFT's at 0. Plus or minus 3 or so.

 

[Freimuth]

So what should I start looking at?

Thanks for your info.

 

[Juanmiguel]

probably a vacuum leak.

 

[Bio248]

youre running really rich. in the negatives means the car is trying to pull fuel and right now its maxing out what it is allowed to pull.

something is wrong.

 

[Bedwards]

Any DTC's?

 

[Freimuth]

No CEL lights but a random for EVAP which is from my gas tank. If i fill it max it leaks.

 

[gtpsleeper]

im suprised you haven thrown the rich code yet...

 

[01gpgt01]

-21 means the evap is purging. You need to fix the evap

 

[mskram1]

same problem but mine stays at like -12 idle -17 to -21 under boost... looks like im gonna add an evap to my laundry list of parts i need

 

[Freimuth]

So what parts of the EVAP system should I start looking at to replace?